fungi Flashcards

(57 cards)

1
Q

what is mycology?

A

the study of fungi

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2
Q

are fungi prokaryotic or eukaryotic?

A

fungi are eukaryotic

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3
Q

how many known species are there?

A

100,000

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4
Q

fungi date back to when?

A

approximately 1 billion

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5
Q

what is a mycelium?

A

A mesh of branched filaments (hyphae)

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6
Q

what is the result of the interconnected cytoplasm of the cells?

A

free nutrient flow between the cells

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7
Q

are fungi heterotrophic or autotrophic?

A

fungi are heterotrophic

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8
Q

what are saprobes?

A

nutrients from non-living organic matter

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9
Q

what does mutualists mean?

A

living with other organisms

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10
Q

parasites?

A

nutrients from organic living matter

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11
Q

what is saprobic fungal species?

A

a decomposer of dead organic material

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12
Q

what are some examples of parasitic fungi?

A

rust on a plant and a fungal predator on a roundworm

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13
Q

are fungus bodies haploid or diploid

A

fungus bodies are haploid

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14
Q

how can fungi reproduce asexually?

A

by forming spores through mitosis

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15
Q

how can fungi reproduce sexually?

A

by fusion of haploid cells followed by meiosis

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16
Q

are fungus mostly haploid or diploid?

A

fungus are mostly haploid

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17
Q

what is plasmogamy?

A

the fusion of cytoplasm between two haploid cells

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18
Q

what is karyogamy?

A

the fusion of two nuclei to form two diploid zygote

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19
Q

how many myophletic groups are there?

A

there are five

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20
Q

what are the oldest known group of fungi?

A

chytridiomycota, or chytrids

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21
Q

where do chytrids live?

A

in water on dead organisms or through parasitism

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22
Q

chytrids threaten what species?

A

many frogs!

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23
Q

where is zygomycota found?

A

In soil or decaying organisms

24
Q

what is the asexual reproduction of zygomycota?

A

reproduction from spores through sporangia

25
what is the sexual reproduction of zygomycota?
hyphae from opposite mating types fuse
26
what are some types of zygomycota?
mold on bread and fungi on fruit and vegetables
27
where do ascomycota live?
In decaying vegetation
28
what is the predominant phase of ascomycota life cycle?
the haploid phase
29
the lifecycle of ascomycota is characterized by what?
the production of asci during the sexual phase
30
what type of fungi form fruit bodies like mushrooms?
basidiomycetes
31
do basidiomycetes reproduce sexually or asexually?
sexually
32
what is dikaryotic mycelium?
mycelium with cells that have two haploid nuclei
33
mycorrhizae live in symbiosis with what?
mycorrhizae live in symbiosis with plant roots
34
how many observed species of glomeromycota are there?
about 230
35
what is the sexual reproduction of deuteromycota?
the sexual reproduction is unknown
36
what is the asexual reproduction of deuteromycota?
reproduction through conidiospores in conidiosphores
37
do members of deuteromycota share a common ancestor?
no, deuteromycota are not a monophyletic clade
38
which types of fungi are mutualists?
mycorrhizae, lichens, and endophytic fungi
39
what does mutualists mean?
interact closely with other organisms
40
mycorrhizae are mutualists with what?
plant roots
41
where do ectomycorrhizae live?
on the outside of roots or cells
42
what do endomycorrhizae do?
they penetrate root cells as arbuscules
43
what nutrients do mycorrhizae uptake when facilitating plant roots?
they facilitate phosphorus and nitrogen
44
what do mycorrhizae get in return when facilitating plant roots?
they get sugars in return
45
the conquest of land by plants would not have been possible without what type of fungi?
the conquest of land by plants would not have been possible without mycorrhizae
46
lichens are sensitive to what?
air pollution
47
lichens are in a mutualistic relationship with what?
with photosynthetic organisms (typically alga, or cyanobacteria)
48
photosynthetic organisms produce food through photosynthesis, and a large part is________?
consumed by lichens!
49
fungus provides what kind of environment for alga, or bacterium?
it provides it with a protective environment
50
lichens are a pioneer species, because?
they live in harsh environments
51
what are the roles of fungi?
recyclers, parasites, and they affect humans in a number of ways
52
what are the roles of fungi as recyclers?
many fungi are saprophytes or saprobes, which means they eat dead organic material and recycle the nutrients
53
what are the roles of fungi as parasites?
they can kill plants and animals
54
how do fungi affect humans?
they can destroy crops, cause diseases, produce toxins, and they also have benefits, like medicine and yeast
55
amanita virosa, also known as the deadly angel, is so dubbed for what reason?
because it's deadly poisonous and the guy that named it was racist
56
what does mycetismus mean?
ingestion of poisonous mushrooms
57
what does mycotoxicosus mean?
poisoning by mushrooms